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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9412941 B1

PDFFull Text
Date of Patent:
Aug. 09, 2016

Filed:

Mar. 16, 2015

Phase change memory cell with self-aligned vertical heater and low resistivity interface

Applicant:

Micron Technology, Inc., Boise, ID (US);

Inventors:

Barbara Zanderighi, Milan, IT;

Francesco Pipia, Milan, IT;

Assignee:

Micron Technology, Inc., Boise, ID (US);

Attorney:

Schwegman Lundberg & Woessner, P.A.

Primary Examiner:

Benjamin Sandvik

Int. Cl.
CPC ...
H01L 45/00 (2006.01); H01L 27/24 (2006.01); G11C 13/00 (2006.01);
U.S. Cl.
CPC ...
H01L 45/126 (2013.01); H01L 27/2445 (2013.01); H01L 27/2463 (2013.01); H01L 27/2481 (2013.01); H01L 45/06 (2013.01); H01L 45/1233 (2013.01); H01L 45/144 (2013.01); H01L 45/1675 (2013.01); G11C 13/0004 (2013.01); G11C 2013/008 (2013.01);
Abstract

A low resistivity interface material is provided between a self-aligned vertical heater element and a contact region of a selection device. A phase change chalcogenide material is deposited directly on the vertical heater element. In an embodiment, the vertical heater element in L-shaped, having a curved vertical wall along the wordline direction and a horizontal base. In an embodiment, the low resistivity interface material is deposited into a trench with a negative profile using a PVD technique. An upper surface of the low resistivity interface material may have a tapered bird-beak extension.

Find Patent Forward Citations

Zanderighi, Barbara. (2016). Phase change memory cell with self-aligned vertical heater and low resistivity interface (U.S. Patent No. 9412941). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9412941

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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